/Engine/Source/Runtime/Renderer/Public/VariableRateShadingImageManager.h
Generates image(s) and saves to generator cache. Should only be run once per view per frame, in Render().
void PrepareImages ( [FRDGBuilder](API\Runtime\RenderCore\FRDGBuilder) & GraphBuilder, const [FSceneViewFamily](API\Runtime\Engine\FSceneViewFamily) & ViewFamily, const FMinimalSceneTextures & SceneTextures )